Alzheimer’s Disease

This diagram presents a model of Alzheimer’s disease. It brings together many facts about Alzheimer’s disease to present a picture of the disease and the context in which it operates. The diagram is intended to help people who are familiar with some aspects of AD have a wider understanding of it. It is also helpful […]

Navigating Dynamic Databases

The Ballot Ecosystem

An election is a complex process with several steps involving many components. This concept map provides a general overview.

Navigating Dynamic Databases

This article introduces several issues related to the problem of navigating multi-dimensional data spaces—large databases. It examines problems with trying to conform data to a single taxonomy and the limits of tree structures as navigational devices. It offers several alternative devices, and it notes the need to enable random, multi-variate filtering so that users may […]